# CVE-2022-49318: linux: In the Linux kernel, the following vulnerability has been resolved:  f2fs: remove WARN_ON in f2fs_is_valid_blkaddr  S...

CVE-2022-49318 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49318, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-49318
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  f2fs: remove WARN_ON in f2fs_is_valid_blkaddr  Syzbot triggers two WARNs in f2fs_is_valid_blkaddr and __is_bitmap_valid. For example, in f2fs_is_valid_blkaddr, if type is DATA_GENERIC_ENHANCE or DATA_GENERIC_ENHANCE_READ, it invokes WARN_ON if blkaddr is not in the right range. The call trace is as follows:   f2fs_get_node_info+0x45f/0x1070  read_node_page+0x577/0x1190  __get_node_page.part.0+0x9e/0x10e0  __get_node_page  f2fs_get_node_page+0x109/0x180  do_read_inode  f2fs_iget+0x2a5/0x58b0  f2fs_fill_super+0x3b39/0x7ca0  Fix these two WARNs by replacing WARN_ON with dump_stack.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.18.5-1 | [DEBIAN-CVE-2022-49318](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49318.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.18.5-1 | [DEBIAN-CVE-2022-49318](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49318.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.18.5-1 | [DEBIAN-CVE-2022-49318](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49318.md) | Feb 26, 2025 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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